Machine for engraving or sinking dies.



J. F. KELLER.

MACHINE PORENGRAVING 0R SINKING DIES.

APPLICATION IILED 00'121, 190:!-

No. 877,436. PATENTED JAN. 21, 1908.

' 'ISHEETS-SHEBT 1.

mvssEs INVENTOI? M I m M A TTOHNE) PATENTED JAN. 21, 1908.

7 SHEETS-8HEET 2.

J.. F. KELLER. MACHINE FOR ENGRAVING OR SINKING DIES.

' APPLICATION FILED ()OT.1, 1907.

V ITNESSES 4 TTOHNE Y PATENTED JAN. 21, 1908.-

J. F. KELLER. MACHINE FOR ENGRAVING 0R SINKING' DIES.

7 SHEETS-SHEET 3.

APPLICATION FILED 0OT.1. 1907.

' INVENTOH M 4M0 ATTORNEY No. 877,436. PATENTED JAN. 21, 1908.

J. P. KELLER.

MAGHINETOR ENGRAVING 0R SINKING DIES.

APPLICATION FILED 0OT.1. 1 907.

7 SHEETSSHEET 4.

WITNESSES INVENTOH www I BY @M A TTORNEY PATENTED JAN. 21, 1908.

' J. F. KELLER.

I MACHINE FOR ENGRAVING OR SINKING DIES.

APPLICATION FILED OOT.1. 1907.

7 SHEETS-SHEET 5.

- O h 0 I- 7d I 4 i: 1

,l h i 1 L96 1 WI W I um- WVE TO'T v ma, 'V I MW,

PATENTED JAN. 21 1908. No 877,436 J. P. KELLER.

MACHINE FOR ENGRAVING 0R SINKING DIES.

APPLIDATION FILED 00m. 1907. 7 sunken e /NVENTOH ATTORNEY /TNESSES 70 M M 7 SHEETS-SHEET 7.

ATTORNEY No. 877,436. PATENTED JAN. 21, 1908. J. P. KELLER.

MACHINE FOR ENGRAVING 0R smxme ms.

APPLICATION FILED 0O'I.1. 1907.

UNITED STATES PATENT OFFICE.

JOSEPH F K KELLER, on NEW YORK, N. Y.

MACHINE FOR ENGBAVING oasnmmc mns.

, Specification of Letters Patent.

Patented Jan. 21, 1908.

Application filed October 1, 1907. Serial No. 395374:-

To all whom it may concern:

Be it known that I, JOSEPH FINK KELLER, a citizen of the United States, and a resident of New York, borough of Manhattan, in the county of New York and State of New York, have made and invented certain new and useful Improvements in Machines for Engraving or Sinking Dies, of which the following is a specification.

My invention relates toan improvement in machines for engraving or sinking dies, and

' particularly to that style or character of maor tracer-and the cutting tool lying on the same side of the pivot or fulcrum. In the present instance, it has been my purpose to so construct a machine that'the die will be an exact reproduction of the templet or pattern, including the size thereof, and to eifectthis result, I so construct and arrange the several parts that the pivot or fulcrum of the bar carrying the pointer or tracer and the cutting tool, will be in a line equidistant from the centers of the die under formation, and the templet or pattern from which it is copied.

With these and other endsin view, my in.

vention consists in certain novel features of construction and combinations of parts as will be hereinafter fully described and pointed out in the claims.

In the accompanying drawings Figure 1 is a view in front elevation of my improved machine. Fig. 2 is an end view of a portion thereof. Fig. 3- is an enlarged front view with portions broken away to more clearly show the reversing mechanism. Fig. 4 is a vertical cross section taken on the line 44 of Fig. 3, looking in the direction of the arrow. Fig. 5 is a front View of a modified form of the machine, and Fig. 6 an end view of the same. Fig. 7 is a front view of another modified form of the machine, and Fig. 8 is a secilziional' view thereof taken on the line 8-8 of Referring to the drawings, 12 represents the bed of the machine supported by thelegs or standards 13, and upon which are adjustably secured the head stocks .1415 for supporting the two parallel transverse spindles, upon one of which is mounted the templet or .pattern, and on the other the metal out of which the die is to'be cut, as hereinafter explained. On the bed of the machineis also secured the bracket 16, in the upper portion of which is mounted the spindle 17, the latter having tightly. secured thereto the lever 18,

provided with flanges 19 forming bearings for the lugs or projections 20 formed on theupper end of the oscillating arm or bracket 21, the opposite end of the lever 18 being pivotally secured to the connectingrod 22, this construction and arrangement of parts allowing a swingin or oscillating'move'ment of the lower end 0 the arm 21 transversely of the machine and also an oscillating movement thereof lengthwise of the machine when the outer end of the lever 18 is raised or lowered by the connecting rod 22. To counterbalance the weight of the arm 21 and its attached parts so that the same may oscillate freely in a direction transversely of the machine, I secure tothe upper end thereof, the lever 23, having secured to its outer free end the. weight 24, as clearly illustrated in Fig. 2 of the drawings.

In the headstock 15 is mounted thetransverse spindle 25, upon one end of which is secured the chuck 26 for holding thetemplet or pattern 27, and in the head stock 14 is mounted the spindle 28 parallel to the former one, and upon one end of which is secured the chuck 29 for holding thedie blank 30,. the fulcrum or pivot of the arm 21 being in a vertical line equidistant from the two spindles 2528.

The-lower free end of the oscillating arm 21 has mounted therein the horizontal bar or rod 31, to which is secured on one side of said arm, a suitable bracket 32, carrying the pointer or tracer 33, and upon the opposite side of said arm 21 asuitable bearing 48 in which rotates a cutting tool-34, the pointer or tracer 33 being kept in contactwlth the model or pattern 27, and the revolving cutting tool 34 in contact with the metal 30 from which the die is to be cut, by reason of the weight of the arm 21 and its attached rod or shaft 31.

As described in the patents above referred to, movement is imparted to the pazallel spindles 25 28, and the parts attached thereto, by means of the gears 35-36, shown:

in dotted, lines in Fig. 3, which mesh with the shaft 37, the latter receivingits motion through the pulley 38' secured thereto, and

over which passes the belt 39, the latter also passing over the pulley 40 secured to theshaft 41.

Tothe outer end of the cutting tool issecured a ulley42, over which passes thebelt 43., the atter also'passing over a pulley 44 turning on the rod '45, thepu1ley44 also hav ing a belt 46 passing over. the same, which To the belt in turn passes over the pulley 47 to which is imparted a rotating movement .from any suitable source,'and whereby motion is imparted to the cuttingtool 34.

ower end of the connecting rod 22, is secured the slide 49 traveling vertically on the frame 50 secured tightly to the frame of the machine, said block or slide 49 havthegear 52 meshing Withthe wormfformed on the end of the shaft 53, the latter mounted in bearings 54 secured tothebframe of the machine, and. carrying the cone, pulley ,55 meshing with a similar cone 56 secured to-the shaft 57, the outer or extreme end ofthe latter being provided with a sprocketover which passes the chain 58. Th1s chain also passes over a similar sprocket 59 mounted on a shaft 60, said shaft also carrying 'age'ar in. the arc-of a circle.

meshing with the worm 6j1 formed-0n the extreme endof. the main driving-' shaft -2,j=

and from which it'jreceives its motiozLw be gradually lowered, thereby igradually' lowering the outer end of the lever18 and causing they lower end of the oscillating arm] 21 to 'swing lengthwise-of thev machinayand arm 21' 'eause's a-similar movement. oftthe bar 31,'wh1ch results in thepointer or tracer. in

engagement with the templet or pattern and thecuttmg tool in engagement-with the-die Y under formation,.to travel outwardly" from h-plet'lor attern; I v Itw' l hereforebe underst'oo the centers of. said pattern and 'die'toithe I outer/edges thereof, and-pas :the osc-illating.

- arm 21-" isipivo'tedto the leve'r 118I, t i transversely of-'the' machine, where.

4 "-mit of the 'pointerxorf tracer closely the raised and depressedpor sziat the motion allowed fanI oscillatj'f I in operation, gthe, bar; 3-1 secured;g. to the osc lating 21;, allowed'to back;

and outline of the model.

end of said lever bein This movement (ifithe,

yltoxper 0 wardly and forwardly, allowing its attached pointer or tracer 33 to follow closely the contour of the pattern or model and at the same time is gradually moved lengthwise of the machine causing-the. pointer or tracerto slowly and gradually travel from the-center of the pattern or model to the outer edge thereof, and as said oscillating arm is fulcrumed-at, a point equally distant from the "centers .of the die and attern, the former will be an exact repro uction both The model or pattern and the dieblank under formation, may as described the patent to Cam i, be given a rotating motion,

or as'describe in the patent granted to me,

"and before referred to, may be given an oscillating motion.

In the present instance Ihave shown se-.

cured to-the main driving shaft 62, abevel gear 63 meshingwith a similar gear 64 secured to theupper end of a rod 65, the lower end of the latter being prov-ided'with a bevel gear 66, adapted to mesh with. similar gears 6768, both mounted on the shaft41, and

forming part ofan ordinarydouble friction clutch." -As this clutch forms" no part of the invention and may be of any approvedstyle or patter-m-no detail descri tlon or illustra 1 tion thereof is'nec'essary. t is operated. by the lower free end of the lever 69, fulcrumed at 70 to the frame of the machine, the upper pro'videdwith an elongated slot 71, in which is secured the 'inwardly projecting pin 72. Upon the'chuck [26 carrying the attern, or if desired, upon thepattern itse f,.I have secured the triparni s will engage with the pin 72, forcing *theg-upperend o site" direction, throwing into operation the 'fping'arm 73, so disposed that when the patteriagis rotateddn, one direction, one of the From the foregoing descri" tion-itwill be: j understood-that when the t 'eaded rod 51 is'givena slow rotating motion.'(indire ctly from the main driving shaft), the threaded block 49 through which said rod passes, will i p the lever 69 in one direction,

andthe lower'end of said lever in the oppoclutch on the shaft 41, causing 1t to revolve v in a'certain direction, the belt 39 causing the worm-shaft 37 to turn in a direction opposite to that infwhich it was formerly turning.

"ljhe pattern will travel in this certain direction until the dppos te arm 73 comes in contact with the pin 72, whereupon the lower endofthe lever 69 will be shiftedfthereb I bringin the' clutch into engagement wi-t dium of the belt 39',- will change thedirection lowedto rotate in'one direction until the the she. t 41 in such way as to chan eits "rota tion','whi'ch shaft ,in'turnthrong the me I i l of trav'el or rotationof the shaft 37, resulting 1 in' turninglthetemplet' or pattern in the oppo- *site' directiomand so.-.on,it bein understood .that botl 1fthe-templet-and die; lockare al- T pointer or tracer will travel from one sideor 1 edge of the surface of the model .to the opposite'si'de or'edge thereof, the extent of travel ofthejm del and die blank in'either direction bei'ng wholly .governedby thepositions of the tripping arms 73. Instead of having i desired, be reversed, that is, the spindles may lie in a vertical plane and the faces of the die blank or pattern in a horizontal plane, as illustrated in Figs. and 6, wherein 74 represents the bed of the machine provided with the bracket 75 and bearing 76 for supporting the rod 77, the latter carrying the arm 78 corresponding to the oscillating arm 21' of I Figs. 1, 2, 3, and 4, said arm 78 being pro- .vided with the rod 79, which in turn has mounted thereon the pointer or tracer 80 and the revolving cutting tool 81, a rotating motion being imparted to said cutting tool bymeans of the belt 82 passing around the pulley 83 secured to said cutting tool and the pulley 84, substantially as in the instance of the machine as first described.

The templet or pattern 85 is secured to the chuck 86 mounted upon the spindle 87, the opposite spindle 88 carrying "the chuck 89 to which is secured the die blank 90, the faces of said templet or pattern 85 and die blank 90 being in a horizontal plane instead of a vertical plane as first described. As in the former instance the spindles 8788 have secured thereto the gears 9192 meshing with the worm 93, the shaft of the latter car-.

rying a sprocket around which passes the chain 94 which also passes around a similar sprocket 95 secured to the shaft 96, the latter being provided with the worm 97 meshing with the sector or gear 98 secured to the rod 77, in order to gradually turn the same with its oscillating arm 78 and attached. pointer or tracer and cutting tool so that the latter may be fed from the centers of the die and pattern to the outer edges thereof, as described in the first instance.

, It will also be evident thatinstead ofmounting the pattern and die upon parallel machine having mounted thereon the sliding plate 100 adapted. to travel lengthwise of the machine and dovetailed upon the latter, a plate 101 adapted to travel transversely of the machine, this latter plate having securedthereto the templet or pattern -102and die '1 he oscillating arm 104 with its cutting'tool 105 and pointer or tracer 106 is arranged in substantially the same manner as that shown in Figs. 5 and 6, the feeding mechanism connected with the sliding plates 100101 and tripping mechanism being substantially similar in construction and arrangement as that employed in horizontal milling machines, and as such forms no part of the present inventior, no detail description thereof is-necessary.

In all the foregoing instances, however, it will be understood that the oscillating arm carrying the rod or bar upon which are mounted the tracer and cutting tool, is fulcrumed or pivoted at a point equidistant from the centers of the pattern and die blank, being moved simultaneously to preserve the relation between the parts, in order that the die may be an exact reproduction in contour and size as the pattern from which it is copied.

Having fully described my invention, what I claim as new and desire to secure by Letters Patent, is

1. In a. machine for the reproduction of a die from a pattern, the combination with an oscillating arm pivotally supported at one end, of die blank and pattern holders for supporting the die blank and pattern respectively and both located upon the same side of said oscillating arm, means for simultaneously moving said holders, and a cutting tool and tracer carried by said oscillating arm and engaging with said die blankand pattern respectively and located at points equidistant from the pivotal support of said oscillating arm, substantially as described 2. In a machine for reproducmg a die from a pattern, the combination with die blank and pattern holders for supporting the die blank and pattern respectively, and means for simultaneously moving said holders, 9. single arm adapted to oscillate with relation to said holders and pivoted at a point equidistant from the centers of said holders, a cutting tool and tracer mounted on said oscillating arm and engaging with said die blank and pattern respectively, and means forfeeding said cutting tool and tracer across the surfaces of said die blank and pattern,

substantially as described.

3. In a machine for reproducing a die from I a pattern, the combination with two parallel spindles one carrying the pattern and the other the die blank, of means for imparting motion thereto, an arm adapted to oscillate with relation to said die blank and pattern and pivoted at a point equidistant from the centers of said die blank and-pattern, and a tracer and cutting tool secured to said oscillat ing arm and engaging with the pattern and die blank respectively, substantially as de-- scribed.

4. In a machine for reproducing a die from a pattern, the combination with two parallel spindles one carrying the die blank and the other the pattern, of means for imparting motion thereto, an oscillating arm pivoted to the machine, at a point equidistant from they centers of said die blank and pattern, a tracer and cutting tool carried by said arm and engaging with the pattern and die blank respectively, and. means for moving said oscillating arm in a plane parallel with the faces of said die blank and pattern, whereby said cutting tool and tracer are gradually fed across the surfaces of said die blank and pattern, substantially as described.

5. In a machine of the character described, the combination with two parallel spindles, one carrying the pattern and the other the die blank and tri ping means for automatically changing t e direction of the movement thereof, of an oscillatingarm pivoted to the machine at a point equidistant from the centers of said pattern and die blank, a bar carried by said arm, a tracer and revolving cutting tool carried by said bar andengaging with the pattern and die blank respectively,and means for swingin said oscillating arm parallel to the plane 0 the faces of said, pattern and die blank whereby the tracer and cutting tool will be moved across said faces, substantiallyas described.

6. In a machine of the character described, the combination with two parallel spindles one carrying the pattern and the other the die blank, of means for imparting the same motion thereto, tri ping mechanism secured to one of said spin es and engaging with the driving shaft whereby the direction of movement of said spindles and the attached pattern and die blank is automatically changed, a tracer {and revolving cutting tool engaga77,4se

ing with the pattern and die blank, an oscillating arm pivoted to the machine at a point.

equidistant from the centers oflsaid pattern and die blank, and means for feeding said tracer and cutting tool across the faces of said pattern and die blank, substantially as described.

7. In a machine for reproducing a die from a pattern, the combination with a die blank holder and a pattern, means for simultaneously moving, said die blank holder and pattern, an arm adapted to oscillate with 'relation to said die blank holder and pattern,

and-pivoted at a point equidistant from the- Q JOSEPH 'FINK KELLER.

. Witnesses:

SIDNEY A. KELLER, JULE DrENKs. 

